<template>
    <div :class="className" :style="{height:height,width:width}">
    </div>
</template>

<script>
import * as echarts from 'echarts'
import "echarts-gl";
//   require('echarts/theme/macarons') // echarts theme
import resize from '../../../views/dashboard/mixins/resize'

export default {
    mixins: [resize],
    props: {
        className: {
            type: String,
            default: 'chart'
        },
        width: {
            type: String,
            default: '100%'
        },
        height: {
            type: String,
            default: '100%'
        }
    },
    data() {
        return {
            chart: null
        }
    },
    mounted() {
        console.log("aaaaaaaaaaaaaa");

        console.log('className:', this.className);
        console.log('width:', this.width);
        console.log('height:', this.height);
        this.$nextTick(() => {
            this.initChart()
        })
    },
    beforeDestroy() {
        if (!this.chart) {
            return
        }
        this.chart.dispose()
        this.chart = null
    },
    methods: {
        initChart() {
            this.chart = echarts.init(this.$el)
            const optionsData = [
                {
                    name: '正常',
                    value: 134,
                    itemStyle: {
                        //   opacity: 0.5,
                        color: '#4781e2',
                    },
                },

                {
                    name: '偏瘦',
                    value: 240,
                    itemStyle: {
                        //   opacity: 0.5,
                        color: '#7ecfc2',
                    },
                },
                {
                    name: '超重',
                    value: 126,
                    itemStyle: {
                        //   opacity: 0.5,
                        color: '#f4fc45',
                    },
                },
            ];

            const series = this.getPie3D(optionsData, 0.8, 240, 28, 26, 0.5);

            series.push({
                name: 'pie2d',
                type: 'pie',
                label: {
                    opacity: 1,
                    fontSize: 13,
                    lineHeight: 20,
                    textStyle: {
                        fontSize: 12,
                    },
                },
                labelLine: {

                    length: 60,
                    length2: 60,
                },
                startAngle: -30, //起始角度，支持范围[0, 360]。
                clockwise: false, //饼图的扇区是否是顺时针排布。上述这两项配置主要是为了对齐3d的样式
                radius: ['20%', '50%'],

                center: ['50%', '50%'],
                data: optionsData,
                itemStyle: {
                    opacity: 0,
                },
            });
            // 准备待返回的配置项，把准备好的 legendData、series 传入。
            var option = {
                legend: {
                    tooltip: {
                        show: true,
                    },
                    data: ['正常', '偏瘦', '超重'],
                    bottom: '5%',
                    textStyle: {
                        color: '#fff',
                        fontSize: 12,
                    },
                },
                animation: true,
                tooltip: {
                    formatter: params => {
                        if (params.seriesName !== 'mouseoutSeries' && params.seriesName !== 'pie2d') {
                            return `${params.seriesName}<br/><span style="display:inline-block;margin-right:5px;border-radius:10px;width:10px;height:10px;background-color:${params.color};"></span>${option.series[params.seriesIndex].pieData.value + '人'}`;
                        }
                    },
                    textStyle: {
                        fontSize: 12
                    },
                },
                title: {

                    x: 'center',
                    top: '20',
                    textStyle: {
                        color: '#fff',
                        fontSize: 12,
                    },
                },
                // backgroundColor: '#333',
                labelLine: {
                    show: true,
                    lineStyle: {
                        color: '#7BC0CB',
                    },
                },
                label: {
                    show: true,
                    position: 'outside',
                    formatter: '{b} \n{c}人\n {d}%',
                    rich: {
                    b: {
                        fontSize: 14,
                        fontWeight: 'bold',
                        color: '#000'
                    },
                    c: {
                        fontSize: 12,
                        color: '#aaa'
                    },
                    d: {
                        fontSize: 12,
                        color: '#aaa'
                    }
                }
                },
                xAxis3D: {
                    min: -1,
                    max: 1,
                },
                yAxis3D: {
                    min: -1,
                    max: 1,
                },
                zAxis3D: {
                    min: -1,
                    max: 1,
                },
                grid3D: {
                    show: false,
                    boxHeight: 0.5,
                    //top: '30%',
                    bottom: '50%',
                    environment: '#021041',

                    viewControl: {
                        distance: 180,
                        alpha: 25,
                        beta: 60,

                        autoRotate: false, // 自动旋转
                    },

                },

                series: series,
            };
            this.chart.setOption(option)
        },


        getParametricEquation(startRatio, endRatio, isSelected, isHovered, k, height) {

            // 计算
            let midRatio = (startRatio + endRatio) / 2;

            let startRadian = startRatio * Math.PI * 2;
            let endRadian = endRatio * Math.PI * 2;
            let midRadian = midRatio * Math.PI * 2;

            // 如果只有一个扇形，则不实现选中效果。
            if (startRatio === 0 && endRatio === 1) {
                isSelected = false;
            }

            // 通过扇形内径/外径的值，换算出辅助参数 k（默认值 1/3）
            k = typeof k !== 'undefined' ? k : 1 / 3;

            // 计算选中效果分别在 x 轴、y 轴方向上的位移（未选中，则位移均为 0）
            let offsetX = isSelected ? Math.cos(midRadian) * 0.1 : 0;
            let offsetY = isSelected ? Math.sin(midRadian) * 0.1 : 0;

            // 计算高亮效果的放大比例（未高亮，则比例为 1）
            let hoverRate = isHovered ? 1.05 : 1;

            // 返回曲面参数方程
            return {

                u: {
                    min: -Math.PI,
                    max: Math.PI * 3,
                    step: Math.PI / 32
                },

                v: {
                    min: 0,
                    max: Math.PI * 2,
                    step: Math.PI / 20
                },

                x: function (u, v) {
                    if (u < startRadian) {
                        return offsetX + Math.cos(startRadian) * (1 + Math.cos(v) * k) * hoverRate;
                    }
                    if (u > endRadian) {
                        return offsetX + Math.cos(endRadian) * (1 + Math.cos(v) * k) * hoverRate;
                    }
                    return offsetX + Math.cos(u) * (1 + Math.cos(v) * k) * hoverRate;
                },

                y: function (u, v) {
                    if (u < startRadian) {
                        return offsetY + Math.sin(startRadian) * (1 + Math.cos(v) * k) * hoverRate;
                    }
                    if (u > endRadian) {
                        return offsetY + Math.sin(endRadian) * (1 + Math.cos(v) * k) * hoverRate;
                    }
                    return offsetY + Math.sin(u) * (1 + Math.cos(v) * k) * hoverRate;
                },

                z: function (u, v) {
                    if (u < - Math.PI * 0.5) {
                        return Math.sin(u);
                    }
                    if (u > Math.PI * 2.5) {
                        return Math.sin(u);
                    }
                    return Math.sin(v) > 0 ? 1 * height : -1;
                }
            };
        },
        getPie3D(pieData, internalDiameterRatio) {

            let series = [];
            let sumValue = 0;
            let startValue = 0;
            let endValue = 0;
            let legendData = [];
            let k = typeof internalDiameterRatio !== 'undefined' ? (1 - internalDiameterRatio) / (1 + internalDiameterRatio) : 1 / 3;

            // 为每一个饼图数据，生成一个 series-surface 配置
            for (let i = 0; i < pieData.length; i++) {

                sumValue += pieData[i].value;

                let seriesItem = {
                    name: typeof pieData[i].name === 'undefined' ? `series${i}` : pieData[i].name,
                    type: 'surface',
                    parametric: true,
                    wireframe: {
                        show: false
                    },
                    pieData: pieData[i],
                    pieStatus: {
                        selected: false,
                        hovered: false,
                        k: k
                    }
                };

                if (typeof pieData[i].itemStyle != 'undefined') {

                    let itemStyle = {};

                    typeof pieData[i].itemStyle.color != 'undefined' ? itemStyle.color = pieData[i].itemStyle.color : null;
                    typeof pieData[i].itemStyle.opacity != 'undefined' ? itemStyle.opacity = pieData[i].itemStyle.opacity : null;

                    seriesItem.itemStyle = itemStyle;
                }
                series.push(seriesItem);
            }

            // 使用上一次遍历时，计算出的数据和 sumValue，调用 getParametricEquation 函数，
            // 向每个 series-surface 传入不同的参数方程 series-surface.parametricEquation，也就是实现每一个扇形。
            for (let i = 0; i < series.length; i++) {
                endValue = startValue + series[i].pieData.value;
                console.log(series[i]);
                series[i].pieData.startRatio = startValue / sumValue;
                series[i].pieData.endRatio = endValue / sumValue;
                series[i].parametricEquation = this.getParametricEquation(series[i].pieData.startRatio, series[i].pieData.endRatio, false, false, k, series[i].pieData.value);

                startValue = endValue;

                legendData.push(series[i].name);
            }

            // // 补充一个透明的圆环，用于支撑高亮功能的近似实现。
            series.push({
                name: 'mouseoutSeries',
                type: 'surface',
                parametric: true,
                wireframe: {
                    show: false,
                },
                itemStyle: {
                    opacity: 0.1,
                    color: '#E1E8EC',
                },
                parametricEquation: {
                    u: {
                        min: 0,
                        max: Math.PI * 2,
                        step: Math.PI / 20,
                    },
                    v: {
                        min: 0,
                        max: Math.PI,
                        step: Math.PI / 20,
                    },
                    x: function (u, v) {
                        return ((Math.sin(v) * Math.sin(u) + Math.sin(u)) / Math.PI) * 2;
                    },
                    y: function (u, v) {
                        return ((Math.sin(v) * Math.cos(u) + Math.cos(u)) / Math.PI) * 2;
                    },
                    z: function (u, v) {
                        return Math.cos(v) > 0 ? -0.5 : -5;
                    },
                },
            });

            // // 补充一个透明的圆环，用于支撑高亮功能的近似实现。
            series.push({
                name: 'mouseoutSeries',
                type: 'surface',
                parametric: true,
                wireframe: {
                    show: false,
                },
                itemStyle: {
                    opacity: 0.1,
                    color: '#E1E8EC',
                },
                parametricEquation: {
                    u: {
                        min: 0,
                        max: Math.PI * 2,
                        step: Math.PI / 20,
                    },
                    v: {
                        min: 0,
                        max: Math.PI,
                        step: Math.PI / 20,
                    },
                    x: function (u, v) {
                        return ((Math.sin(v) * Math.sin(u) + Math.sin(u)) / Math.PI) * 2;
                    },
                    y: function (u, v) {
                        return ((Math.sin(v) * Math.cos(u) + Math.cos(u)) / Math.PI) * 2;
                    },
                    z: function (u, v) {
                        return Math.cos(v) > 0 ? -5 : -7;
                    },
                },
            });
            series.push({
                name: 'mouseoutSeries',
                type: 'surface',
                parametric: true,
                wireframe: {
                    show: false,
                },
                itemStyle: {
                    opacity: 0.1,
                    color: '#E1E8EC',

                },

                parametricEquation: {
                    u: {
                        min: 0,
                        max: Math.PI * 2,
                        step: Math.PI / 20,
                    },
                    v: {
                        min: 0,
                        max: Math.PI,
                        step: Math.PI / 20,
                    },
                    x: function (u, v) {
                        return ((Math.sin(v) * Math.sin(u) + Math.sin(u)) / Math.PI) * 2.2;
                    },
                    y: function (u, v) {
                        return ((Math.sin(v) * Math.cos(u) + Math.cos(u)) / Math.PI) * 2.2;
                    },
                    z: function (u, v) {
                        return Math.cos(v) > 0 ? -7 : -7;
                    },
                },
            });
            return series;
        },



    }
}
</script>